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COST OF SALES (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Disclosure of Detailed Information About Cost of Sales [Line Items]        
Direct mining cost $ 787 $ 800 $ 1,545 $ 1,661
Depreciation 328 409 653 823
Royalty expense 51 57 110 115
Community relations 10 11 20 20
Cost of sales 1,176 1,277 2,328 2,619
Inventory reduction amount 2 3 5 6
Gold        
Disclosure of Detailed Information About Cost of Sales [Line Items]        
Direct mining cost 716 718 1,406 1,512
Depreciation 290 383 588 768
Royalty expense 43 49 93 100
Community relations 9 9 17 17
Cost of sales 1,058 1,159 2,104 2,397
Copper        
Disclosure of Detailed Information About Cost of Sales [Line Items]        
Direct mining cost 69 74 135 134
Depreciation 30 19 49 33
Royalty expense 8 8 17 15
Community relations 1 1 3 2
Cost of sales 108 102 204 184
Other        
Disclosure of Detailed Information About Cost of Sales [Line Items]        
Direct mining cost 2 8 4 15
Depreciation 8 7 16 22
Royalty expense 0 0 0 0
Community relations 0 1 0 1
Cost of sales $ 10 $ 16 $ 20 $ 38